Needed for my ten-times patch.
Question: why do we grep . after grep -v? It is not guaranteed that
grep -v will exit positive when it output something?
Index: ChangeLog
from Akim Demaille <[EMAIL PROTECTED]>
* Makefile.am (maintainer-check): `undef $/' is OK.
Index: Makefile.am
--- Makefile.am Mon, 26 Feb 2001 23:44:40 +0100 akim (am/f/46_Makefile.a 1.10 644)
+++ Makefile.am Tue, 27 Feb 2001 22:20:55 +0100 akim (am/f/46_Makefile.a 1.10 644)
@@ -88,8 +88,10 @@
echo "Found incorrect use of mkinstalldirs in the lines above" 1>&2; \
exit 1; \
else :; fi
-## We never want to use "undef", only "delete".
- @if grep -n -w undef $(srcdir)/automake.in; then \
+## We never want to use "undef", only "delete", but for $/.
+ @if grep -n -w undef $(srcdir)/automake.in | \
+ fgrep -v 'undef $/' | \
+ grep . ; then \
echo "Found undef in automake.in; use delete instead" 1>&2; \
exit 1; \
fi
